ash/shell.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/shell.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "ash/accelerators/focus_manager_factory.h"
  11 #include "ash/ash_switches.h"
  12 #include "ash/caps_lock_delegate.h"
  13 #include "ash/desktop_background/desktop_background_controller.h"
  14 #include "ash/desktop_background/desktop_background_view.h"
  15 #include "ash/desktop_background/user_wallpaper_delegate.h"
  16 #include "ash/display/display_controller.h"
  17 #include "ash/display/display_manager.h"
  18 #include "ash/display/event_transformation_handler.h"
  19 #include "ash/display/mouse_cursor_event_filter.h"
  20 #include "ash/display/screen_position_controller.h"
  21 #include "ash/drag_drop/drag_drop_controller.h"
  22 #include "ash/focus_cycler.h"
  23 #include "ash/high_contrast/high_contrast_controller.h"
  24 #include "ash/host/root_window_host_factory.h"
  25 #include "ash/launcher/launcher_delegate.h"
  26 #include "ash/launcher/launcher_model.h"
  27 #include "ash/magnifier/magnification_controller.h"
  28 #include "ash/magnifier/partial_magnification_controller.h"
  29 #include "ash/root_window_controller.h"
  30 #include "ash/screen_ash.h"
  31 #include "ash/shell_delegate.h"
  32 #include "ash/shell_factory.h"
  33 #include "ash/shell_window_ids.h"
  34 #include "ash/system/status_area_widget.h"
  35 #include "ash/system/tray/system_tray_delegate.h"
  36 #include "ash/system/tray/system_tray_notifier.h"
  37 #include "ash/tooltips/tooltip_controller.h"
  38 #include "ash/touch/touch_observer_hud.h"
  39 #include "ash/wm/activation_controller.h"
  40 #include "ash/wm/always_on_top_controller.h"
  41 #include "ash/wm/app_list_controller.h"
  42 #include "ash/wm/ash_activation_controller.h"
  43 #include "ash/wm/ash_focus_rules.h"
  44 #include "ash/wm/base_layout_manager.h"
  45 #include "ash/wm/capture_controller.h"
  46 #include "ash/wm/coordinate_conversion.h"
  47 #include "ash/wm/custom_frame_view_ash.h"
  48 #include "ash/wm/event_client_impl.h"
  49 #include "ash/wm/event_rewriter_event_filter.h"
  50 #include "ash/wm/overlay_event_filter.h"
  51 #include "ash/wm/power_button_controller.h"
  52 #include "ash/wm/property_util.h"
  53 #include "ash/wm/resize_shadow_controller.h"
  54 #include "ash/wm/root_window_layout_manager.h"
  55 #include "ash/wm/screen_dimmer.h"
  56 #include "ash/wm/session_state_controller.h"
  57 #include "ash/wm/session_state_controller_impl.h"
  58 #include "ash/wm/session_state_controller_impl2.h"
  59 #include "ash/wm/system_gesture_event_filter.h"
  60 #include "ash/wm/system_modal_container_event_filter.h"
  61 #include "ash/wm/system_modal_container_layout_manager.h"
  62 #include "ash/wm/user_activity_detector.h"
  63 #include "ash/wm/video_detector.h"
  64 #include "ash/wm/window_animations.h"
  65 #include "ash/wm/window_cycle_controller.h"
  66 #include "ash/wm/window_properties.h"
  67 #include "ash/wm/window_util.h"
  68 #include "ash/wm/workspace_controller.h"
  69 #include "base/bind.h"
  70 #include "base/command_line.h"
  71 #include "base/debug/leak_annotations.h"
  72 #include "ui/aura/client/aura_constants.h"
  73 #include "ui/aura/client/user_action_client.h"
  74 #include "ui/aura/env.h"
  75 #include "ui/aura/focus_manager.h"
  76 #include "ui/aura/layout_manager.h"
  77 #include "ui/aura/root_window.h"
  78 #include "ui/aura/window.h"
  79 #include "ui/base/ui_base_switches.h"
  80 #include "ui/compositor/layer.h"
  81 #include "ui/compositor/layer_animator.h"
  82 #include "ui/gfx/display.h"
  83 #include "ui/gfx/image/image_skia.h"
  84 #include "ui/gfx/screen.h"
  85 #include "ui/gfx/size.h"
  86 #include "ui/views/corewm/compound_event_filter.h"
  87 #include "ui/views/corewm/corewm_switches.h"
  88 #include "ui/views/corewm/focus_controller.h"
  89 #include "ui/views/corewm/input_method_event_filter.h"
  90 #include "ui/views/corewm/shadow_controller.h"
  91 #include "ui/views/corewm/visibility_controller.h"
  92 #include "ui/views/corewm/window_modality_controller.h"
  93 #include "ui/views/focus/focus_manager_factory.h"
  94 #include "ui/views/widget/native_widget_aura.h"
  95 #include "ui/views/widget/widget.h"
  96 #include "ui/views/window/dialog_frame_view.h"
  97
  98 #if !defined(OS_MACOSX)
  99 #include "ash/accelerators/accelerator_controller.h"
 100 #include "ash/accelerators/accelerator_filter.h"
 101 #include "ash/accelerators/nested_dispatcher_controller.h"
 102 #endif
 103
 104 #if defined(OS_CHROMEOS)
 105 #include "ash/display/display_change_observer_x11.h"
 106 #include "ash/display/output_configurator_animation.h"
 107 #include "base/chromeos/chromeos_version.h"
 108 #include "base/message_pump_aurax11.h"
 109 #include "chromeos/display/output_configurator.h"
 110 #include "content/public/browser/gpu_data_manager.h"
 111 #include "content/public/common/gpu_feature_type.h"
 112 #endif  // defined(OS_CHROMEOS)
 113
 114 namespace ash {
 115
 116 namespace {
 117
 118 using aura::Window;
 119 using views::Widget;
 120
 121 // This dummy class is used for shell unit tests. We dont have chrome delegate
 122 // in these tests.
 123 class DummyUserWallpaperDelegate : public UserWallpaperDelegate {
 124  public:
 125   DummyUserWallpaperDelegate() {}
 126
 127   virtual ~DummyUserWallpaperDelegate() {}
 128
 129   virtual int GetAnimationType() OVERRIDE {
 130     return views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE;
 131   }
 132
 133   virtual bool ShouldShowInitialAnimation() OVERRIDE {
 134     return false;
 135   }
 136
 137   virtual void UpdateWallpaper() OVERRIDE {
 138   }
 139
 140   virtual void InitializeWallpaper() OVERRIDE {
 141     ash::Shell::GetInstance()->desktop_background_controller()->
 142         CreateEmptyWallpaper();
 143   }
 144
 145   virtual void OpenSetWallpaperPage() OVERRIDE {
 146   }
 147
 148   virtual bool CanOpenSetWallpaperPage() OVERRIDE {
 149     return false;
 150   }
 151
 152   virtual void OnWallpaperAnimationFinished() OVERRIDE {
 153   }
 154
 155   virtual void OnWallpaperBootAnimationFinished() OVERRIDE {
 156   }
 157
 158  private:
 159   DISALLOW_COPY_AND_ASSIGN(DummyUserWallpaperDelegate);
 160 };
 161
 162 // A Corewm VisibilityController subclass that calls the Ash animation routine
 163 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 164 class AshVisibilityController : public views::corewm::VisibilityController {
 165  public:
 166   AshVisibilityController() {}
 167   virtual ~AshVisibilityController() {}
 168
 169  private:
 170   // Overridden from views::corewm::VisibilityController:
 171   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 172       aura::Window* window,
 173       bool visible) OVERRIDE {
 174     return AnimateOnChildWindowVisibilityChanged(window, visible);
 175   }
 176
 177   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 178 };
 179
 180 }  // namespace
 181
 182 // static
 183 Shell* Shell::instance_ = NULL;
 184 // static
 185 bool Shell::initially_hide_cursor_ = false;
 186
 187 ////////////////////////////////////////////////////////////////////////////////
 188 // Shell, public:
 189
 190 Shell::Shell(ShellDelegate* delegate)
 191     : screen_(new ScreenAsh),
 192       active_root_window_(NULL),
 193       delegate_(delegate),
 194       activation_client_(NULL),
 195 #if defined(OS_CHROMEOS)
 196       output_configurator_(new chromeos::OutputConfigurator()),
 197       output_configurator_animation_(
 198           new internal::OutputConfiguratorAnimation()),
 199 #endif  // defined(OS_CHROMEOS)
 200       browser_context_(NULL),
 201       simulate_modal_window_open_for_testing_(false) {
 202   DCHECK(delegate_.get());
 203   display_manager_.reset(new internal::DisplayManager);
 204   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
 205   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
 206   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
 207     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 208 #if defined(OS_CHROMEOS)
 209   content::GpuFeatureType blacklisted_features =
 210       content::GpuDataManager::GetInstance()->GetBlacklistedFeatures();
 211   bool is_panel_fitting_disabled =
 212       (blacklisted_features & content::GPU_FEATURE_TYPE_PANEL_FITTING) ||
 213       CommandLine::ForCurrentProcess()->HasSwitch(
 214           switches::kAshDisablePanelFitting);
 215   output_configurator_->Init(!is_panel_fitting_disabled);
 216
 217   output_configurator_->AddObserver(output_configurator_animation_.get());
 218   base::MessagePumpAuraX11::Current()->AddDispatcherForRootWindow(
 219       output_configurator());
 220 #endif  // defined(OS_CHROMEOS)
 221   AddPreTargetHandler(this);
 222 }
 223
 224 Shell::~Shell() {
 225   views::FocusManagerFactory::Install(NULL);
 226
 227   // Remove the focus from any window. This will prevent overhead and side
 228   // effects (e.g. crashes) from changing focus during shutdown.
 229   // See bug crbug.com/134502.
 230   if (active_root_window_)
 231     aura::client::GetFocusClient(active_root_window_)->FocusWindow(NULL);
 232
 233   // Please keep in same order as in Init() because it's easy to miss one.
 234   RemovePreTargetHandler(user_activity_detector_.get());
 235   RemovePreTargetHandler(event_rewriter_filter_.get());
 236   RemovePreTargetHandler(overlay_filter_.get());
 237   RemovePreTargetHandler(input_method_filter_.get());
 238   RemovePreTargetHandler(window_modality_controller_.get());
 239   if (mouse_cursor_filter_.get())
 240     RemovePreTargetHandler(mouse_cursor_filter_.get());
 241   RemovePreTargetHandler(system_gesture_filter_.get());
 242 #if !defined(OS_MACOSX)
 243   RemovePreTargetHandler(accelerator_filter_.get());
 244 #endif
 245   if (touch_observer_hud_.get())
 246     RemovePreTargetHandler(touch_observer_hud_.get());
 247
 248   // TooltipController is deleted with the Shell so removing its references.
 249   RemovePreTargetHandler(tooltip_controller_.get());
 250
 251   // AppList needs to be released before shelf layout manager, which is
 252   // destroyed with launcher container in the loop below. However, app list
 253   // container is now on top of launcher container and released after it.
 254   // TODO(xiyuan): Move it back when app list container is no longer needed.
 255   app_list_controller_.reset();
 256
 257   // Destroy SystemTrayDelegate before destroying the status area(s).
 258   system_tray_delegate_.reset();
 259
 260   // Destroy all child windows including widgets.
 261   display_controller_->CloseChildWindows();
 262
 263   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 264   // needs to remove observers from it.
 265   system_tray_notifier_.reset();
 266
 267   // These need a valid Shell instance to clean up properly, so explicitly
 268   // delete them before invalidating the instance.
 269   // Alphabetical. TODO(oshima): sort.
 270   drag_drop_controller_.reset();
 271   magnification_controller_.reset();
 272   partial_magnification_controller_.reset();
 273   resize_shadow_controller_.reset();
 274   shadow_controller_.reset();
 275   tooltip_controller_.reset();
 276   event_client_.reset();
 277   window_cycle_controller_.reset();
 278   capture_controller_.reset();
 279   nested_dispatcher_controller_.reset();
 280   user_action_client_.reset();
 281   visibility_controller_.reset();
 282   launcher_delegate_.reset();
 283   launcher_model_.reset();
 284
 285   power_button_controller_.reset();
 286   session_state_controller_.reset();
 287
 288   // This also deletes all RootWindows.
 289   display_controller_.reset();
 290   screen_position_controller_.reset();
 291
 292   // Delete the activation controller after other controllers and launcher
 293   // because they might have registered ActivationChangeObserver.
 294   activation_controller_.reset();
 295
 296   DCHECK(instance_ == this);
 297   instance_ = NULL;
 298
 299 #if defined(OS_CHROMEOS)
 300   output_configurator_->RemoveObserver(output_configurator_animation_.get());
 301   base::MessagePumpAuraX11::Current()->RemoveDispatcherForRootWindow(
 302       output_configurator());
 303 #endif  // defined(OS_CHROMEOS)
 304 }
 305
 306 // static
 307 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 308   CHECK(!instance_);
 309   instance_ = new Shell(delegate);
 310   instance_->Init();
 311   return instance_;
 312 }
 313
 314 // static
 315 Shell* Shell::GetInstance() {
 316   DCHECK(instance_);
 317   return instance_;
 318 }
 319
 320 // static
 321 bool Shell::HasInstance() {
 322   return !!instance_;
 323 }
 324
 325 // static
 326 void Shell::DeleteInstance() {
 327   delete instance_;
 328   instance_ = NULL;
 329 }
 330
 331 // static
 332 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 333   return GetRootWindowController(GetPrimaryRootWindow());
 334 }
 335
 336 // static
 337 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 338   return Shell::GetInstance()->display_controller()->
 339       GetAllRootWindowControllers();
 340 }
 341
 342 // static
 343 aura::RootWindow* Shell::GetPrimaryRootWindow() {
 344   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 345 }
 346
 347 // static
 348 aura::RootWindow* Shell::GetActiveRootWindow() {
 349   return GetInstance()->active_root_window_;
 350 }
 351
 352 // static
 353 gfx::Screen* Shell::GetScreen() {
 354   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 355 }
 356
 357 // static
 358 Shell::RootWindowList Shell::GetAllRootWindows() {
 359   return Shell::GetInstance()->display_controller()->
 360       GetAllRootWindows();
 361 }
 362
 363 // static
 364 aura::Window* Shell::GetContainer(aura::RootWindow* root_window,
 365                                   int container_id) {
 366   return root_window->GetChildById(container_id);
 367 }
 368
 369 // static
 370 const aura::Window* Shell::GetContainer(const aura::RootWindow* root_window,
 371                                         int container_id) {
 372   return root_window->GetChildById(container_id);
 373 }
 374
 375 // static
 376 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 377     int container_id,
 378     aura::RootWindow* priority_root) {
 379   std::vector<aura::Window*> containers;
 380   RootWindowList root_windows = GetAllRootWindows();
 381   for (RootWindowList::const_iterator it = root_windows.begin();
 382        it != root_windows.end(); ++it) {
 383     aura::Window* container = (*it)->GetChildById(container_id);
 384     if (container) {
 385       if (priority_root && priority_root->Contains(container))
 386         containers.insert(containers.begin(), container);
 387       else
 388         containers.push_back(container);
 389     }
 390   }
 391   return containers;
 392 }
 393
 394 // static
 395 bool Shell::IsLauncherPerDisplayEnabled() {
 396   CommandLine* command_line = CommandLine::ForCurrentProcess();
 397   return !command_line->HasSwitch(switches::kAshDisableLauncherPerDisplay);
 398 }
 399
 400 void Shell::Init() {
 401 #if defined(OS_CHROMEOS)
 402   if (base::chromeos::IsRunningOnChromeOS()) {
 403     display_change_observer_.reset(new internal::DisplayChangeObserverX11);
 404     display_change_observer_->NotifyDisplayChange();
 405   }
 406 #endif
 407
 408   // Install the custom factory first so that views::FocusManagers for Tray,
 409   // Launcher, and WallPaper could be created by the factory.
 410   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 411
 412   env_filter_.reset(new views::corewm::CompoundEventFilter);
 413   AddPreTargetHandler(env_filter_.get());
 414
 415   if (views::corewm::UseFocusController()) {
 416     views::corewm::FocusController* focus_controller =
 417         new views::corewm::FocusController(new wm::AshFocusRules);
 418     focus_client_.reset(focus_controller);
 419     activation_client_ = focus_controller;
 420     activation_client_->AddObserver(this);
 421   } else {
 422     focus_client_.reset(new aura::FocusManager);
 423     activation_controller_.reset(
 424         new internal::ActivationController(
 425             focus_client_.get(),
 426             new internal::AshActivationController));
 427     activation_client_ = activation_controller_.get();
 428     AddPreTargetHandler(activation_controller_.get());
 429   }
 430
 431   focus_cycler_.reset(new internal::FocusCycler());
 432
 433   screen_position_controller_.reset(new internal::ScreenPositionController);
 434   root_window_host_factory_.reset(delegate_->CreateRootWindowHostFactory());
 435   display_controller_.reset(new DisplayController);
 436   display_controller_->InitPrimaryDisplay();
 437   aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
 438   active_root_window_ = root_window;
 439
 440   cursor_manager_.SetDeviceScaleFactor(
 441       root_window->AsRootWindowHostDelegate()->GetDeviceScaleFactor());
 442
 443 #if !defined(OS_MACOSX)
 444   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 445   accelerator_controller_.reset(new AcceleratorController);
 446 #endif
 447
 448   // The order in which event filters are added is significant.
 449   user_activity_detector_.reset(new UserActivityDetector);
 450   AddPreTargetHandler(user_activity_detector_.get());
 451
 452   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
 453   AddPreTargetHandler(event_rewriter_filter_.get());
 454
 455   overlay_filter_.reset(new internal::OverlayEventFilter);
 456   AddPreTargetHandler(overlay_filter_.get());
 457   AddShellObserver(overlay_filter_.get());
 458
 459   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 460                                  root_window->GetAcceleratedWidget()));
 461   AddPreTargetHandler(input_method_filter_.get());
 462
 463 #if !defined(OS_MACOSX)
 464   accelerator_filter_.reset(new internal::AcceleratorFilter);
 465   AddPreTargetHandler(accelerator_filter_.get());
 466 #endif
 467
 468   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 469   AddPreTargetHandler(event_transformation_handler_.get());
 470
 471   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 472   AddPreTargetHandler(system_gesture_filter_.get());
 473
 474   capture_controller_.reset(new internal::CaptureController);
 475
 476   internal::RootWindowController* root_window_controller =
 477       new internal::RootWindowController(root_window);
 478   root_window_controller->CreateContainers();
 479   root_window_controller->CreateSystemBackground(
 480       delegate_->IsFirstRunAfterBoot());
 481
 482   CommandLine* command_line = CommandLine::ForCurrentProcess();
 483
 484   if (command_line->HasSwitch(ash::switches::kAshDisableNewLockAnimations))
 485     session_state_controller_.reset(new SessionStateControllerImpl);
 486   else
 487     session_state_controller_.reset(new SessionStateControllerImpl2);
 488   power_button_controller_.reset(new PowerButtonController(
 489       session_state_controller_.get()));
 490   AddShellObserver(session_state_controller_.get());
 491
 492   if (command_line->HasSwitch(switches::kAshTouchHud)) {
 493     touch_observer_hud_.reset(new internal::TouchObserverHUD);
 494     AddPreTargetHandler(touch_observer_hud_.get());
 495   }
 496
 497   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 498   AddPreTargetHandler(mouse_cursor_filter_.get());
 499
 500   // Create Controllers that may need root window.
 501   // TODO(oshima): Move as many controllers before creating
 502   // RootWindowController as possible.
 503   visibility_controller_.reset(new AshVisibilityController);
 504   drag_drop_controller_.reset(new internal::DragDropController);
 505   user_action_client_.reset(delegate_->CreateUserActionClient());
 506   window_modality_controller_.reset(
 507       new views::corewm::WindowModalityController);
 508   AddPreTargetHandler(window_modality_controller_.get());
 509
 510   magnification_controller_.reset(
 511       MagnificationController::CreateInstance());
 512
 513   partial_magnification_controller_.reset(
 514       new PartialMagnificationController());
 515
 516   high_contrast_controller_.reset(new HighContrastController);
 517   video_detector_.reset(new VideoDetector);
 518   window_cycle_controller_.reset(new WindowCycleController(activation_client_));
 519
 520   tooltip_controller_.reset(new internal::TooltipController(
 521       drag_drop_controller_.get()));
 522   AddPreTargetHandler(tooltip_controller_.get());
 523
 524   event_client_.reset(new internal::EventClientImpl);
 525
 526   InitRootWindowController(root_window_controller);
 527
 528   // This controller needs to be set before SetupManagedWindowMode.
 529   desktop_background_controller_.reset(new DesktopBackgroundController());
 530   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 531   if (!user_wallpaper_delegate_.get())
 532     user_wallpaper_delegate_.reset(new DummyUserWallpaperDelegate());
 533
 534   // StatusAreaWidget uses Shell's CapsLockDelegate.
 535   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 536
 537   if (!command_line->HasSwitch(switches::kAuraNoShadows)) {
 538     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 539     shadow_controller_.reset(
 540         new views::corewm::ShadowController(GetPrimaryRootWindow()));
 541   }
 542
 543   // Create system_tray_notifier_ before the delegate.
 544   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 545
 546   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 547   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 548   if (!system_tray_delegate_.get())
 549     system_tray_delegate_.reset(SystemTrayDelegate::CreateDummyDelegate());
 550
 551   // Creates StatusAreaWidget.
 552   root_window_controller->InitForPrimaryDisplay();
 553
 554   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 555   system_tray_delegate_->Initialize();
 556
 557   display_controller_->InitSecondaryDisplays();
 558
 559   // Force Layout
 560   root_window_controller->root_window_layout()->OnWindowResized();
 561
 562   // It needs to be created after OnWindowResized has been called, otherwise the
 563   // widget will not paint when restoring after a browser crash.  Also it needs
 564   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 565   // the correct size.
 566   user_wallpaper_delegate_->InitializeWallpaper();
 567
 568   if (initially_hide_cursor_)
 569     cursor_manager_.DisableMouseEvents();
 570   cursor_manager_.SetCursor(ui::kCursorPointer);
 571
 572   // Cursor might have been hidden by somethign other than chrome.
 573   // Let the first mouse event show the cursor.
 574   env_filter_->set_cursor_hidden_by_filter(true);
 575 }
 576
 577 void Shell::ShowContextMenu(const gfx::Point& location_in_screen) {
 578   // No context menus if user have not logged in.
 579   if (!delegate_->IsUserLoggedIn())
 580     return;
 581   // No context menus when screen is locked.
 582   if (IsScreenLocked())
 583     return;
 584
 585   aura::RootWindow* root =
 586       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 587   // TODO(oshima): The root and root window controller shouldn't be
 588   // NULL even for the out-of-bounds |location_in_screen| (It should
 589   // return the primary root). Investigate why/how this is
 590   // happening. crbug.com/165214.
 591   internal::RootWindowController* rwc = GetRootWindowController(root);
 592   CHECK(rwc) << "root=" << root
 593              << ", location:" << location_in_screen.ToString();
 594   if (rwc)
 595     rwc->ShowContextMenu(location_in_screen);
 596 }
 597
 598 void Shell::ToggleAppList(aura::Window* window) {
 599   // If the context window is not given, show it on the active root window.
 600   if (!window)
 601     window = GetActiveRootWindow();
 602   if (!app_list_controller_.get())
 603     app_list_controller_.reset(new internal::AppListController);
 604   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 605 }
 606
 607 bool Shell::GetAppListTargetVisibility() const {
 608   return app_list_controller_.get() &&
 609       app_list_controller_->GetTargetVisibility();
 610 }
 611
 612 aura::Window* Shell::GetAppListWindow() {
 613   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 614 }
 615
 616 bool Shell::CanLockScreen() {
 617   return delegate_->CanLockScreen();
 618 }
 619
 620 bool Shell::IsScreenLocked() const {
 621   return delegate_->IsScreenLocked();
 622 }
 623
 624 bool Shell::IsSystemModalWindowOpen() const {
 625   if (simulate_modal_window_open_for_testing_)
 626     return true;
 627   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 628       internal::kShellWindowId_SystemModalContainer, NULL);
 629   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 630        cit != containers.end(); ++cit) {
 631     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 632          wit != (*cit)->children().end(); ++wit) {
 633       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 634           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 635         return true;
 636       }
 637     }
 638   }
 639   return false;
 640 }
 641
 642 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 643     views::Widget* widget) {
 644   if (CommandLine::ForCurrentProcess()->HasSwitch(
 645           ::switches::kEnableNewDialogStyle)) {
 646     return new views::DialogFrameView(string16());
 647   }
 648   // Use translucent-style window frames for dialogs.
 649   CustomFrameViewAsh* frame_view = new CustomFrameViewAsh;
 650   frame_view->Init(widget);
 651   return frame_view;
 652 }
 653
 654 void Shell::RotateFocus(Direction direction) {
 655   focus_cycler_->RotateFocus(
 656       direction == FORWARD ? internal::FocusCycler::FORWARD :
 657                              internal::FocusCycler::BACKWARD);
 658 }
 659
 660 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 661                                      const gfx::Insets& insets) {
 662   if (!display_manager_->UpdateWorkAreaOfDisplayNearestWindow(contains, insets))
 663     return;
 664   FOR_EACH_OBSERVER(ShellObserver, observers_,
 665                     OnDisplayWorkAreaInsetsChanged());
 666 }
 667
 668 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 669   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 670   RootWindowControllerList controllers = GetAllRootWindowControllers();
 671   for (RootWindowControllerList::iterator iter = controllers.begin();
 672        iter != controllers.end(); ++iter)
 673     (*iter)->OnLoginStateChanged(status);
 674 }
 675
 676 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 677   RootWindowControllerList controllers = GetAllRootWindowControllers();
 678   for (RootWindowControllerList::iterator iter = controllers.begin();
 679        iter != controllers.end(); ++iter)
 680     (*iter)->UpdateAfterLoginStatusChange(status);
 681 }
 682
 683 void Shell::OnAppTerminating() {
 684   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 685 }
 686
 687 void Shell::OnLockStateChanged(bool locked) {
 688   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 689 }
 690
 691 void Shell::CreateLauncher() {
 692   if (IsLauncherPerDisplayEnabled()) {
 693     RootWindowControllerList controllers = GetAllRootWindowControllers();
 694     for (RootWindowControllerList::iterator iter = controllers.begin();
 695          iter != controllers.end(); ++iter)
 696       (*iter)->CreateLauncher();
 697   } else {
 698     GetPrimaryRootWindowController()->CreateLauncher();
 699   }
 700 }
 701
 702 void Shell::ShowLauncher() {
 703   if (IsLauncherPerDisplayEnabled()) {
 704     RootWindowControllerList controllers = GetAllRootWindowControllers();
 705     for (RootWindowControllerList::iterator iter = controllers.begin();
 706          iter != controllers.end(); ++iter)
 707       (*iter)->ShowLauncher();
 708   } else {
 709     GetPrimaryRootWindowController()->ShowLauncher();
 710   }
 711 }
 712
 713 void Shell::AddShellObserver(ShellObserver* observer) {
 714   observers_.AddObserver(observer);
 715 }
 716
 717 void Shell::RemoveShellObserver(ShellObserver* observer) {
 718   observers_.RemoveObserver(observer);
 719 }
 720
 721 void Shell::UpdateShelfVisibility() {
 722   RootWindowControllerList controllers = GetAllRootWindowControllers();
 723   for (RootWindowControllerList::iterator iter = controllers.begin();
 724        iter != controllers.end(); ++iter)
 725     if ((*iter)->shelf())
 726       (*iter)->UpdateShelfVisibility();
 727 }
 728
 729 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 730                                      aura::RootWindow* root_window) {
 731   GetRootWindowController(root_window)->SetShelfAutoHideBehavior(behavior);
 732 }
 733
 734 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 735     aura::RootWindow* root_window) const {
 736   return GetRootWindowController(root_window)->GetShelfAutoHideBehavior();
 737 }
 738
 739 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 740                               aura::RootWindow* root_window) {
 741   if (GetRootWindowController(root_window)->SetShelfAlignment(alignment)) {
 742     FOR_EACH_OBSERVER(
 743         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 744   }
 745 }
 746
 747 ShelfAlignment Shell::GetShelfAlignment(aura::RootWindow* root_window) {
 748   return GetRootWindowController(root_window)->GetShelfAlignment();
 749 }
 750
 751 void Shell::SetDimming(bool should_dim) {
 752   RootWindowControllerList controllers = GetAllRootWindowControllers();
 753   for (RootWindowControllerList::iterator iter = controllers.begin();
 754        iter != controllers.end(); ++iter)
 755     (*iter)->screen_dimmer()->SetDimming(should_dim);
 756 }
 757
 758 void Shell::CreateModalBackground(aura::Window* window) {
 759   if (!modality_filter_.get()) {
 760     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 761     AddPreTargetHandler(modality_filter_.get());
 762   }
 763   RootWindowControllerList controllers = GetAllRootWindowControllers();
 764   for (RootWindowControllerList::iterator iter = controllers.begin();
 765        iter != controllers.end(); ++iter)
 766     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 767 }
 768
 769 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 770   RootWindowControllerList controllers = GetAllRootWindowControllers();
 771   bool activated = false;
 772   for (RootWindowControllerList::iterator iter = controllers.begin();
 773        iter != controllers.end() && !activated; ++iter) {
 774     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 775         ActivateNextModalWindow();
 776   }
 777   if (!activated) {
 778     RemovePreTargetHandler(modality_filter_.get());
 779     modality_filter_.reset();
 780     for (RootWindowControllerList::iterator iter = controllers.begin();
 781          iter != controllers.end(); ++iter)
 782       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 783   }
 784 }
 785
 786 WebNotificationTray* Shell::GetWebNotificationTray() {
 787   return GetPrimaryRootWindowController()->status_area_widget()->
 788       web_notification_tray();
 789 }
 790
 791 bool Shell::HasPrimaryStatusArea() {
 792   return !!GetPrimaryRootWindowController()->status_area_widget();
 793 }
 794
 795 SystemTray* Shell::GetPrimarySystemTray() {
 796   return GetPrimaryRootWindowController()->GetSystemTray();
 797 }
 798
 799 LauncherDelegate* Shell::GetLauncherDelegate() {
 800   if (!launcher_delegate_.get()) {
 801     launcher_model_.reset(new LauncherModel);
 802     launcher_delegate_.reset(
 803         delegate_->CreateLauncherDelegate(launcher_model_.get()));
 804   }
 805   return launcher_delegate_.get();
 806 }
 807
 808 void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
 809   aura::client::SetFocusClient(root, focus_client_.get());
 810   internal::RootWindowController* controller =
 811       new internal::RootWindowController(root);
 812   controller->CreateContainers();
 813   // Pass false for the |is_first_run_after_boot| parameter so we'll show a
 814   // black background on this display instead of trying to mimic the boot splash
 815   // screen.
 816   controller->CreateSystemBackground(false);
 817   InitRootWindowController(controller);
 818   if (IsLauncherPerDisplayEnabled())
 819     controller->InitForPrimaryDisplay();
 820   controller->root_window_layout()->OnWindowResized();
 821   desktop_background_controller_->OnRootWindowAdded(root);
 822   high_contrast_controller_->OnRootWindowAdded(root);
 823   root->ShowRootWindow();
 824   // Activate new root for testing.
 825   active_root_window_ = root;
 826 }
 827
 828 void Shell::DoInitialWorkspaceAnimation() {
 829   return GetPrimaryRootWindowController()->workspace_controller()->
 830       DoInitialAnimation();
 831 }
 832
 833 void Shell::InitRootWindowController(
 834     internal::RootWindowController* controller) {
 835   aura::RootWindow* root_window = controller->root_window();
 836   DCHECK(activation_client_);
 837   DCHECK(visibility_controller_.get());
 838   DCHECK(drag_drop_controller_.get());
 839   DCHECK(capture_controller_.get());
 840   DCHECK(window_cycle_controller_.get());
 841
 842   aura::client::SetFocusClient(root_window, focus_client_.get());
 843   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 844   aura::client::SetActivationClient(root_window, activation_client_);
 845   if (views::corewm::UseFocusController()) {
 846     views::corewm::FocusController* controller =
 847         static_cast<views::corewm::FocusController*>(activation_client_);
 848     root_window->AddPreTargetHandler(controller);
 849   }
 850   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
 851   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
 852   aura::client::SetCaptureClient(root_window, capture_controller_.get());
 853   aura::client::SetScreenPositionClient(root_window,
 854                                         screen_position_controller_.get());
 855   aura::client::SetCursorClient(root_window, &cursor_manager_);
 856   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
 857   aura::client::SetEventClient(root_window, event_client_.get());
 858
 859   if (nested_dispatcher_controller_.get()) {
 860     aura::client::SetDispatcherClient(root_window,
 861                                       nested_dispatcher_controller_.get());
 862   }
 863   if (user_action_client_.get())
 864     aura::client::SetUserActionClient(root_window, user_action_client_.get());
 865
 866   root_window->SetCursor(ui::kCursorPointer);
 867   controller->InitLayoutManagers();
 868
 869   // TODO(oshima): Move the instance to RootWindowController when
 870   // the extended desktop is enabled by default.
 871   internal::AlwaysOnTopController* always_on_top_controller =
 872       new internal::AlwaysOnTopController;
 873   always_on_top_controller->SetAlwaysOnTopContainer(
 874       root_window->GetChildById(internal::kShellWindowId_AlwaysOnTopContainer));
 875   root_window->SetProperty(internal::kAlwaysOnTopControllerKey,
 876                            always_on_top_controller);
 877   if (GetPrimaryRootWindowController()->GetSystemModalLayoutManager(NULL)->
 878           has_modal_background()) {
 879     controller->GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 880   }
 881
 882   window_cycle_controller_->OnRootWindowAdded(root_window);
 883 }
 884
 885 ////////////////////////////////////////////////////////////////////////////////
 886 // Shell, private:
 887
 888 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
 889   RootWindowControllerList controllers = GetAllRootWindowControllers();
 890   for (RootWindowControllerList::iterator iter = controllers.begin();
 891        iter != controllers.end(); ++iter) {
 892     if ((*iter)->GetSystemModalLayoutManager(window)->
 893             CanWindowReceiveEvents(window)) {
 894       return true;
 895     }
 896   }
 897   return false;
 898 }
 899
 900 ////////////////////////////////////////////////////////////////////////////////
 901 // Shell, ui::EventTarget overrides:
 902
 903 bool Shell::CanAcceptEvent(const ui::Event& event) {
 904   return true;
 905 }
 906
 907 ui::EventTarget* Shell::GetParentTarget() {
 908   return NULL;
 909 }
 910
 911 void Shell::OnEvent(ui::Event* event) {
 912 }
 913
 914 ////////////////////////////////////////////////////////////////////////////////
 915 // Shell, aura::client::ActivationChangeObserver implementation:
 916
 917 void Shell::OnWindowActivated(aura::Window* gained_active,
 918                               aura::Window* lost_active) {
 919   if (gained_active)
 920     active_root_window_ = gained_active->GetRootWindow();
 921 }
 922
 923 }  // namespace ash